EMARGINULA. 265 



Anterior not so short as in E. incisure/,, the slit shorter and more 

 abrupt. (Ad.) 



Singapore, 7 fms. 



E.planulata Ad, P. Z. S. 1851, p. 86, no. 34.— Sowb. Thes., p. 

 211, f. 1; Conch. Icon., f. 20. 



E. incisura A. Adams. PL 28, fig. 1. 



Elongate-oval, planulate, pale, tawny, summit in front of the 

 middle, inclined backward ; decussated with unequal, scaly-rough- 

 ened radiating riblets and elevated concentric lines ; base arcuate. 

 Margin of aperture crenulated ; deeply fissured ; fissure long; mar- 

 gins calloused within. In this species the slit is long, and a half- 

 cut continuation of it extends to the apex. (Ad.) 



Habitat unknown. 



E. incisura Ad., P. Z. S. 1851, p. 84, no. 17. — Sowb., Thes., p. 

 211, f. 2; Conch. Icon, f. 18. 



E. clypeus A. Adams. PI. 28, fig. 7. 



Elongate-elliptical, much depressed, testaceous, a buff spot in the 

 middle of the back ; summit subcentral, inclined backward ; orna- 

 mented with close, equal, radiating, scaly-roughened ribs. Base 

 arcuate, margin of the aperture crenulated, deeply fissured in front ; 

 the fissure large ; aperture two-spotted inside. Narrow, scabrous, 

 and has some prominent ribs. (Ad.) 



Island of Burias, Philipjrines, 7 fms, on dead shells. 



E. clypeus Ad, P. Z. S. 1851, p. 83, no. 14.— Sowb, Thes. p. 211, 

 f. 3 ; Conch. Icon. f. 21. 



E. dilecta A. Adams. PI. 28, fig. 17. 



Elongate-oval, subquadrangular, white, much depressed, summit 

 subposterior, declining backward ; decussated with subdistant, radi- 

 ating, asperulate ribs, and elevated concentric lirae ; base arcuate ; 

 margin of aperture denticulate, deeply fissured in front. More 

 obtusely conical than E. huzardi, with sculpture closer and apex 

 nearly central. (Ad.) 



King George's Sound, S. Australia. 



E. dilecta Ad, P. Z. S. 1851, p. 85, no. 28.— Sowb, Thes. p. 211, 

 f. 5 ; Conch. Icon. f. 23. 



E. montrouzieri Souverbie. PI. 64, figs. 7, 8. 



Shell ovate-oblong, much depressed-conic, apex minute, behind 

 the middle (I the length from the back margin), shortly projecting; 



